diff options
Diffstat (limited to 'src/widgets/platforms/s60/qdnd_s60.cpp')
| -rw-r--r-- | src/widgets/platforms/s60/qdnd_s60.cpp | 359 |
1 files changed, 359 insertions, 0 deletions
diff --git a/src/widgets/platforms/s60/qdnd_s60.cpp b/src/widgets/platforms/s60/qdnd_s60.cpp new file mode 100644 index 0000000000..53afa71828 --- /dev/null +++ b/src/widgets/platforms/s60/qdnd_s60.cpp @@ -0,0 +1,359 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtGui module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qapplication.h" + +#ifndef QT_NO_DRAGANDDROP + +#include "qwidget.h" +#include "qdatetime.h" +#include "qbitmap.h" +#include "qcursor.h" +#include "qevent.h" +#include "qpainter.h" +#include "qdnd_p.h" +#include "qt_s60_p.h" + +#include <coecntrl.h> +// pointer cursor +#include <w32std.h> +#include <gdi.h> +#include <QCursor> + +QT_BEGIN_NAMESPACE +//### artistic impression of Symbians default DnD cursor ? + +static QPixmap *defaultPm = 0; +static const int default_pm_hotx = -50; +static const int default_pm_hoty = -50; +static const char *const default_pm[] = { +"13 9 3 1", +". c None", +" c #000000", +"X c #FFFFFF", +"X X X X X X X", +" X X X X X X ", +"X ......... X", +" X.........X ", +"X ......... X", +" X.........X ", +"X ......... X", +" X X X X X X ", +"X X X X X X X", +}; +//### actions need to be redefined for S60 +// Shift/Ctrl handling, and final drop status +static Qt::DropAction global_accepted_action = Qt::MoveAction; +static Qt::DropActions possible_actions = Qt::IgnoreAction; + + +// static variables in place of a proper cross-process solution +static QDrag *drag_object; +static bool qt_symbian_dnd_dragging = false; + + +static Qt::KeyboardModifiers oldstate; + +void QDragManager::updatePixmap() +{ + QPixmap pm; + QPoint pm_hot(default_pm_hotx,default_pm_hoty); + if (drag_object) { + pm = drag_object->pixmap(); + if (!pm.isNull()) + pm_hot = drag_object->hotSpot(); + } + if (pm.isNull()) { + if (!defaultPm) + defaultPm = new QPixmap(default_pm); + pm = *defaultPm; + } +#ifndef QT_NO_CURSOR + QCursor cursor(pm, pm_hot.x(), pm_hot.y()); + overrideCursor = cursor; +#endif +} + +void QDragManager::timerEvent(QTimerEvent *) { } + +void QDragManager::move(const QPoint&) { +} + +void QDragManager::updateCursor() +{ +#ifndef QT_NO_CURSOR + QCursor cursor = willDrop ? overrideCursor : Qt::ForbiddenCursor; + if (!restoreCursor) { + QApplication::setOverrideCursor(cursor); + restoreCursor = true; + } + else { + QApplication::changeOverrideCursor(cursor); + } +#endif +} + + +bool QDragManager::eventFilter(QObject *o, QEvent *e) +{ + if (beingCancelled) { + return false; + } + if (!o->isWidgetType()) + return false; + + switch(e->type()) { + case QEvent::MouseButtonPress: + { + } + case QEvent::MouseMove: + { + if (!object) { //#### this should not happen + qWarning("QDragManager::eventFilter: No object"); + return true; + } + QDragManager *manager = QDragManager::self(); + QMimeData *dropData = manager->object ? manager->dragPrivate()->data : manager->dropData; + if (manager->object) + possible_actions = manager->dragPrivate()->possible_actions; + else + possible_actions = Qt::IgnoreAction; + + QMouseEvent *me = (QMouseEvent *)e; + + if (me->buttons()) { + Qt::DropAction prevAction = global_accepted_action; + QWidget *cw = QApplication::widgetAt(me->globalPos()); + // map the Coords relative to the window. + if (!cw) + return true; + + while (cw && !cw->acceptDrops() && !cw->isWindow()) + cw = cw->parentWidget(); + + bool oldWillDrop = willDrop; + if (object->target() != cw) { + if (object->target()) { + QDragLeaveEvent dle; + QApplication::sendEvent(object->target(), &dle); + willDrop = false; + global_accepted_action = Qt::IgnoreAction; + if (oldWillDrop != willDrop) + updateCursor(); + object->d_func()->target = 0; + } + if (cw && cw->acceptDrops()) { + object->d_func()->target = cw; + QDragEnterEvent dee(cw->mapFromGlobal(me->globalPos()), possible_actions, dropData, + me->buttons(), me->modifiers()); + QApplication::sendEvent(object->target(), &dee); + willDrop = dee.isAccepted() && dee.dropAction() != Qt::IgnoreAction; + global_accepted_action = willDrop ? dee.dropAction() : Qt::IgnoreAction; + if (oldWillDrop != willDrop) + updateCursor(); + } + } else if (cw) { + QDragMoveEvent dme(cw->mapFromGlobal(me->globalPos()), possible_actions, dropData, + me->buttons(), me->modifiers()); + if (global_accepted_action != Qt::IgnoreAction) { + dme.setDropAction(global_accepted_action); + dme.accept(); + } + QApplication::sendEvent(cw, &dme); + willDrop = dme.isAccepted(); + global_accepted_action = willDrop ? dme.dropAction() : Qt::IgnoreAction; + if (oldWillDrop != willDrop) { + updatePixmap(); + updateCursor(); + } + } + if (global_accepted_action != prevAction) + emitActionChanged(global_accepted_action); + } + return true; // Eat all mouse events + } + + case QEvent::MouseButtonRelease: + { + qApp->removeEventFilter(this); +#ifndef QT_NO_CURSOR + if (restoreCursor) { + QApplication::restoreOverrideCursor(); + willDrop = false; + restoreCursor = false; + } +#endif + if (object && object->target()) { + + QMouseEvent *me = (QMouseEvent *)e; + + QDragManager *manager = QDragManager::self(); + QMimeData *dropData = manager->object ? manager->dragPrivate()->data : manager->dropData; + + QDropEvent de(object->target()->mapFromGlobal(me->globalPos()), possible_actions, dropData, + me->buttons(), me->modifiers()); + QApplication::sendEvent(object->target(), &de); + if (de.isAccepted()) + global_accepted_action = de.dropAction(); + else + global_accepted_action = Qt::IgnoreAction; + + if (object) + object->deleteLater(); + drag_object = object = 0; + } + eventLoop->exit(); + return true; // Eat all mouse events + } + + default: + break; + } + return false; +} + +Qt::DropAction QDragManager::drag(QDrag *o) +{ + Q_ASSERT(!qt_symbian_dnd_dragging); + if (object == o || !o || !o->source()) + return Qt::IgnoreAction; + + if (object) { + cancel(); + qApp->removeEventFilter(this); + beingCancelled = false; + } + + object = drag_object = o; + + oldstate = Qt::NoModifier; // #### Should use state that caused the drag + willDrop = false; + updatePixmap(); + updateCursor(); + +#ifndef QT_NO_CURSOR + qt_symbian_set_cursor_visible(true); //force cursor on even for touch phone +#endif + + object->d_func()->target = 0; + + qApp->installEventFilter(this); + + global_accepted_action = defaultAction(dragPrivate()->possible_actions, Qt::NoModifier); + qt_symbian_dnd_dragging = true; + + eventLoop = new QEventLoop; + // block + (void) eventLoop->exec(QEventLoop::AllEvents); + delete eventLoop; + eventLoop = 0; + +#ifndef QT_NO_CURSOR + qt_symbian_set_cursor_visible(false); + + overrideCursor = QCursor(); //deref the cursor data + qt_symbian_dnd_dragging = false; +#endif + + return global_accepted_action; +} + + +void QDragManager::cancel(bool deleteSource) +{ + beingCancelled = true; + + if (object->target()) { + QDragLeaveEvent dle; + QApplication::sendEvent(object->target(), &dle); + } + + if (drag_object) { + if (deleteSource) + object->deleteLater(); + drag_object = object = 0; + } + +#ifndef QT_NO_CURSOR + if (restoreCursor) { + QApplication::restoreOverrideCursor(); + restoreCursor = false; + } +#endif + + global_accepted_action = Qt::IgnoreAction; +} + + +void QDragManager::drop() +{ +#ifndef QT_NO_CURSOR + if (restoreCursor) { + QApplication::restoreOverrideCursor(); + restoreCursor = false; + } +#endif +} + +QVariant QDropData::retrieveData_sys(const QString &mimetype, QVariant::Type type) const +{ + if (!drag_object) + return QVariant(); + QByteArray data = drag_object->mimeData()->data(mimetype); + if (type == QVariant::String) + return QString::fromUtf8(data); + return data; +} + +bool QDropData::hasFormat_sys(const QString &format) const +{ + return formats().contains(format); +} + +QStringList QDropData::formats_sys() const +{ + if (drag_object) + return drag_object->mimeData()->formats(); + return QStringList(); +} + +QT_END_NAMESPACE +#endif // QT_NO_DRAGANDDROP |